struct_rusage: Result from getrusage.
This object may be accessed either as a tuple of
(utime,stime,maxrss,ixrss,idrss,isrss,minflt,majflt,
nswap,inblock,oublock,msgsnd,msgrcv,nsignals,nvcsw,nivcsw)
or via the attributes ru_utime, ru_stime, ru_maxrss, and so on.